Hello, Zellator!
Note that: .
The left side becomes:
. .
Hi Forum
Can someone help?
There's a question that states
But how was this thought?
Where could I find about this identity on the web?
The question is actually
Does it change anything by being Cartesian product?
Thanks
Then using we can see that
So
But that's kind of hard to see in the naked eye, thanks to you I will probably find it this forms easily from now on.
Hi Archie Meade,
The thing is, that the right form wasn't given, it had to be calculated, in order to find a better and easier way to solve the Cartesian Product.